<?php
class K0rz3n {
    private $test;
    public $K0rz3n = "i am K0rz3n";
    function __construct() {
        $this->test = new L();
    }

    function __destruct() {
        $this->test->action();
    }
}

class L {
    function action() {
        echo "Welcome to WebSecurity";
    }
}

class Evil {

    var $test2;
    function action() {
        eval($this->test2);
    }
}

unserialize($_GET['para']);
?>